<!doctype html>
<html lang='en'>
<head>
<meta charset='UTF-8'>
</head>
<script></script>
<style>
    @keyframes flash {
	0%, 50%, 100% {opacity: 1;}	
	25%, 75% {opacity: 0;}
}
    .flash {
    animation-name: flash;
    animation-duration: 2s;
}
</style>
<body>
    <div class="flash">小米商城商品详情页</div>
</body>
</html>